misc.h revision b8f152d3e2b9368717743ebcb1277239a6c00659 
1/*
2 * Copyright (C) 2005 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//
18// Handy utility functions and portability code.
19//
20#ifndef _LIBS_UTILS_MISC_H
21#define _LIBS_UTILS_MISC_H
22
23#include <utils/Endian.h>
24
25/* get #of elements in a static array
26 * DO NOT USE: please use std::vector/std::array instead
27 */
28#ifndef NELEM
29# define NELEM(x) ((int) (sizeof(x) / sizeof((x)[0])))
30#endif
31
32namespace android {
33
34typedef void (*sysprop_change_callback)(void);
35void add_sysprop_change_callback(sysprop_change_callback cb, int priority);
36void report_sysprop_change();
37
38}; // namespace android
39
40#endif // _LIBS_UTILS_MISC_H
41